Stair.



' Memes No. 815,840. PATENTED MAR. 20, 1906.

-- J. M. KNAUS.

STAIR. v APPLICATION FILED OUT. 15.1905- atknuaw whom, it concern: B-lUkIlOWIl that 1,-Janns M. KNAUS, 'a

at of the United States, residing at Sedasouri,.;- have invented certain new and useful mprovements in Stairs; and I do hereby del are the followin to be a full, clear, and extidesoriptiono the invention, such as will ,crtains to makeand use the same.

hisinvention relates to improvements in irs, andmordparticularly to astair side li e- 1 5 prpyision'ofmeans for facilitating the assem- ,ll lg and supporting of the lifts and treads of the stairs in osition.

I Another f'ectlof the invention is the con:

i i struction ofp edge is re erably ates or members which are proao vided with eculiarly-formedmeans for supporting .a orizontal meniber-.as,' for-in-' stance, a stain-tread, and, if'desired, a'stair- "-With these, and other objects .inview the invention consists of certain other novel con.- structions, combinations, and arrangements 7 of parts, as will be hereinafter fully described, illustrated in the accompanying drawin s, and more particularly pointed out' in t e ".30 claims hereto appended. I, In the drawings, Figure 1 is a view in side elevation of one of the stair side plates'constructed in accordance with. thepresent inq fvention. Fig. 2 is a similar view to Fig. 1- of another embodiment of the present invention. Fi 3 is a top edge view of the plate depicted ig. .4 is a perspective view of a 'of',- plates em loyed inconstructing a ppr stairs and s owing lifts and treads in position upon said plates. 1

Referring1 to the drawings 1 designates a preferabl I at plate or mom er. Thisplate .is prefera 1y formed of metal and is provided ""With a flan ed ed e 2, Fig.3. The flanged ent outwardly. Formed g integra upon the inner face of each plate 1 is a plurality of sets of Iplaralle'l flanges. "The lower hor zontal set of ange's 3 3 form asupport for the lower'tread of the stairs. These 50 flanges are integrally connected at theirfront edge,' -p referably by a curved'portion 4, while he upper'horizontal set of flanges 5 5 are not dat either end, but re left, open, so

r 1 Specification of Letters Patent. Application tiled omit: 18.1905. Serial No. 2.304.

- 7 7 and 8 8 are integrally lia, i'nQthe county of Pettis and State of Misy may be easily positioned. -enable others skilledin the artto which it ap-- onaoithtbb as er the invention is the son c of the treads may rrnit the upper tread beinserted i the: t rear ;or forw end of. the

71h i; e f fla ges.

JAMES-M KN us oF SEDALIA, MISSOURI.

' --sT A|n.l-

racemes Ma a 20 906.

connected at their lower ends, while the horizontal set of parallel intermediateflanges 9 9 are integrally con- 'nected at their inner ends. These flanges or' extensions of the plates constitute sockets or grooves A and B for the treads and lifts, re.- spectively, within which the lifts and treads v i orm'ed in each of the plates 1 and nearits upper edge is a plurality of apertures 10. 'Apertures 11 are ormed inthe plate below that portion from which extend the inner flanges 5 and 2). These apertures 11 are preferably formed in the plate contiguous to where the flanges 5 and 7 and 8 and E) are integrally connected;

Apertures 12 are formed in each plate near thelower edgethercof below the lower horizontal flange 3.

The tread and lift receiving socketsC and ims ma t 0mm D,'.respectively, of plate 13 are formed by substantially parallel flanges, which are integrally connected at their ends, with the ox-. a

ception of the upper'horizontal llanges'l 4 1.4, which are not connected at their inner ends. The treads and lifts 6 and (3, respectively, must be seated in these grooves or pockets C and D of the plates 13 before both of the plates are secured in their permanent position. Formed in each of the plates 13 are apertures 10, 1'1, and 12.

It is to be noted that the right-angled arallel flanges for the lifts and treads pro uce a plurality of or pockets. Within eac rot the L-shapcd structures may be positioned a lift and a tread.

In the embodiment de icted in Fig. 2 the lower ends of the vertica flanges are not integral with all of the horizontal flanges, there,- by leaving a space 15 between someof' the substantiall L-shaped grooves horizontal and vertical flanges through which an foreign substance dropping upon The laterallyextending flanges of t e plates constitute casings or inclosing means-for the ends of the liftsand treads, thereby protecting the same.

The structure depicted in Figs; 1 and 4 er.- mits the lifts 6 to be dropped'into the soc ets B,"(formed by the flanges of the plates, which constitute brackets,) and subsequent to the positioning of the lifts 6 the treads 6 may be ositioned within the sockets or grooves A. nfaet, the lower tread may be positioned within the lower grooves or sockets A before the lifts 6 are ositioned. upon the plates.

After the f s 6;- h vf 911 Po ioned tron the plates the upper treads may be slid into the grooves A.

The flanged lift and tread supporting means formed uponeach of the plates constitute a stepped structure.

The plates, which are constructed in accordance with this invention, maybe also employed in the construction of coach-steps or any analogous structure.

What I claim is- 1. A device of the character described, comprising a plate provided with parallel, vertical, and horizontal flanges, said flanges producing vertical and horizontal grooves or pockets, the verticalgrooves closed at their lower ends, and said vertical and horizontal grooves open at one end.

2. A device of the character described, comprising a )late provided with horizontal and vertical flanges, the vertical flanges integrally connected at their lower ends.

3, A device of thecl'ass described, comprising a metallic plate provided with a flanged cdge said plate provided with. apertures, a plurality of parallel, vertical flanges, and a plurahtyot parallel, horizontal flanges formed upon said plate, the lower, horizontal flanges integrally connected at their front end, the vertical flanges integrally connected at their lower end,

4. As a new article of manufacture, a stair side plate formed from a blank sheet of metal provided with laterally-extending, sets of parallel flanges producing'a stepped lift and tread-supporting means.

5. A device of the class described, comprising a plate provided with a set of flanges integral at one of their. ends, said flanges constituting a groove or pocket.

6. A stair-plate provided with a set of flan es constituting a groove or pocketwithin w iich a tread or riser may be positioned. 7. A device -of the character described, comprising a plate provided with sets of horizontal and vertical flanges, the vertical flanges in each set integrally connected at their lower ends. g

8. A device of the character described, comprising a plate provided with a set of vertical flanges, the flanges in said set inteigrally connected at their lower ends, and trea porting means formed upon said plate 9. A device of the c aracter described comprising a late provided with horizontal and vertical anges, said flanges extending 5'5 at right angles from said late, and flan formed upon said plate an positioned parallel to sai first-mentioned flanges.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES M. KNAUS. W'itnesses C. H. BOATRIGHT, R. C. KINSEY. 

